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Engine trouble.

Sorry, you think if it had a spin on filter vs the pressure screen maybe less residual damage?
 
MED said:
Is this caused by aerobatics or something else? 😬
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Unknown. Looks like the breakdown started at the one cam lobe and/or pair of lifters. There was hardly any corrosion found in the engine, just some very light corrosion on some of the cylinder walls.
 
Again sorry to see the damage, I guess it’s all replaceable, hopefully everything else checks out ok.
 
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Jerry - was it just that one lifter that went bad? If i interpret the pictures correctly, at least one of the lifters look pristine…
 
Ironflight said:
Jerry - was it just that one lifter that went bad? If i interpret the pictures correctly, at least one of the lifters look pristine…
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Hello Paul. It’s two lifters that shared the one cam lobe that were badly pitted. All other lifters and cam lobes looked very nice.
 
RV8Squaz said:
Unknown. Looks like the breakdown started at the one cam lobe and/or pair of lifters. There was hardly any corrosion found in the engine, just some very light corrosion on some of the cylinder walls.
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that would be a VERY good bet. As the torn off metal circulates, it scores the bearings and pump housing. As the metal falls of the lobe and lifters, it falls on the piston skirts, usually the two directly below the bad lobe/lifter.
 
lr172 said:
Only if the piece is large enough. Also, Due to the surface tension of the oil, alum particles will stick to a magnet. Very easy to get bad conclusions with magnets and small particles.
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Put the samples on a piece of paper, move the magnet UNDER the paper - not in contact with the sample. No surface tension or adhesion to worry about. Ferrous material will line up with the lines of magnetic flux and the aluminum or other low permeability metals will not.
 
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